付俊薇, 赵杰, 刘建培, et al. Practice of Continuous Rolling Process to Improve Macrostructure of Small Size Bar Products of Bearing Steel GCrl5[J]. Special Steel, 2010, 31(5): 42-44.
付俊薇, 赵杰, 刘建培, et al. Practice of Continuous Rolling Process to Improve Macrostructure of Small Size Bar Products of Bearing Steel GCrl5[J]. Special Steel, 2010, 31(5): 42-44.DOI:
increasing reduction in rough rolling passes especially in last passes
the quality of macrostructure of continuous rolling Φ30 ~45 mm round products of bearing steel GCr15 rolled from 150 mm x 150 mm casting billet increases obviously i. e. occurred ratio of residual shrinkage hole decreases to 0 from 26%〜46% before improvement of rolling process
qualified ratio of ultrasonic detection is 100%
rating of general porosity is 0 ~1 and rating of center porosity is 1-1.5.